Type 1 · Individual ✓ Active NPI ✓ Valid NPI checksum Sole proprietor

Mark Rosenholtz

Mental Health Counselor in Passaic, NJ · enumerated 2009.

Data current as of Jul 13, 2026 · sourced from CMS NPPES

National Provider Identifier

1184855496

Verified

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Registry record

Entity type Individual (Type 1)

Name Mark Rosenholtz

Sex Male

Practice address Passaic, NJ, 07055

Phone (212) 989-2990

Fax (212) 792-6058

Enumeration date Aug 4, 2009

Last updated in NPPES Aug 4, 2009

Street address withheld: NPPES sole-proprietor addresses can be home addresses. See our data policy.

Taxonomy & licenses

101YM0800X Mental Health Counselor Behavioral Health & Social Service Providers Primary

What is an NPI number?

A National Provider Identifier (NPI) is a unique 10-digit number that CMS assigns to every U.S. healthcare provider and organization under HIPAA. Type 1 NPIs identify individual providers; Type 2 NPIs identify organizations. The NPI appears on insurance claims, prescriptions, and credentialing paperwork, and never changes, even if the provider moves or changes specialty.

Read the full guide → Validate an NPI →

Frequently asked questions

How do I verify Mark Rosenholtz's NPI record?

Cross-check NPI 1184855496 against the official CMS registry at npiregistry.cms.hhs.gov. This page mirrors the same public NPPES data with a monthly snapshot.

Is NPI 1184855496 active?

Yes, as of the latest NPPES snapshot, NPI 1184855496 is active (record last updated 2009-08-04).

Source: CMS NPPES (public data). Snapshot 2026-07-13. Provider record last updated 2009-08-04.